Sanitation system for metallic building structures



Nov. 10, 1936. T v BALCH 2,060,655

SANITATION SYSTEM FOR METALLIC BUILDING STRUCTURES Filed Jan. 4, 1934SHEET METAL coATfN c1 INcLumNa BARHJM FLUOHJCATE COATING lNCLUDINGLITHOPONE WTH BAMUM CARBONATE AND BARmM FLuoslLlc/ATE.

FIBROUS LAYER F|N|5H COATING PREFERABLY INCLUDING BARHJN FLUOSIUCATE..

cEmEnTm c. AGENT :NLLUDINQ BAmuM' FLuoslLncATs.

INVENTOR.

ATTO YS Patented Nov. 10, 1936 'PATENT OFFICE SANITATION SYSTEM FORMETALLIC BUILDING STRUCTURES Thomas V. Balch, Shaker Heights, Ohio,vassigner to The E. F.Hauserman Company, Cleveland, Ohio, a corporationof Ohio Application January 4, 1934, Serial No. 705,298

8\Claims. (Cl. 18S-85) This invention is a system of sanitation formetallic wall structures, such as partitions, doors, trim and the like,of hollow metal construction which provides a treatment to inhibit anddestroy animal and vegetable organisms on the exposed surfaces, in thecrevices, joints and interior hollow portions, as well as in thecomparative soft materials used for fillers and insulation and the like.

10 The system provides a treatment which is enduring, harmless to humanbeings, odorless and is not destroyed-by steam baths or other materialsused in fumigating, disinfecting or cleaning in the vicinity of thestructure.

l5 It further provides a treatment for exposed surfaces in the samemanner, in as much as the finishes usually extend continuously into thejoints and it is not generally practical to provide a line ofdemarcation between parts which would be concealed and parts which willbe exposed in the final assembly, as it is preferable lto have thehighly-reflned finished surfaces of exterior parts extend behindretaining members in many cases with an adjustable fit.

To the accomplishment of the foregoing and related ends, the invention,then, consists of the features hereinafter fully described, andparticularly pointed out in the claims, the following description andthe annexed drawing setting forth in detail certain embodiments of theinvention, such being illustrative however, of only a few of the variousways in which the principle of the invention may be employed.

In said annexed drawing:/

The sole figure is a fragmentary perspective view illustrating anembodiment of the invention.-

It is well known that lithopone paints have the property of inhibitingthe growth of vegetable organisms, largely due to the presence of zinc40 oxide. There is also present in such paints a considerable quantityof barium carbonate. I Such paints have been unsuccessful asinsecticides however.

The salts of hydro-uoric acid are particularly effective in destroyingand inhibiting a growth of animal organisms even when these salts arepresent on dry surfaces in very minute quantities. Unfortunatelymost ofthese salts are highly corrosive and cannot be used in proximity tosteel or on steel surfaces, for this reason. L`

' Barium fluo-silicate, also known as barium silico fluoride, iscomparatively inert, however, and yet has a. great value as aninsecticide, even in low concentrations. Precautions must be taken,

however, to have an excess of barium present in `be minimized.

For such reasons then, a proper sanitary finish on metal partitionsurfaces and the like has not 5 heretofore been had. By the presentinvention however, such surfaces may be effectively pro-- tected. e

In proceeding in accordance with the invention,

I prefer to use barium fluo-silicate combined with 10 a'lithopone basebaking enamel to cover all metal surfaces inside and out. This providesan excellent protection to the metal which will stand up underconsiderable wear and many chemical exposures and will serve as anexcellent ground 15 coat for the application of additional finishingcoats on exposed surfaces. lThe barium carbonate present in lithoponeprovides the necessary excess of barium to prevent the coating fromhaving a corrosive action. In order that the paint 20 may bake out toasmooth surface, I grind barium fluo-silicate together with the othersolids in the pigment using one of the methods common in the manufactureof paint. I incorporate the barium fluo-silicate in a proportion of atleast one-quar- 2 ter pound to the gallon and thepaint is then appliedby any of the usual methods such as spraying, brushing, dipping, etc.,and baked on if required.

When graining is applied to exposed surfaces 30 in order to simulatewood, vthis is generally done by the application of ink over the groundcoating either manually, using brushes and combs or by process grainingor by transfer. ISimilarly, various antiqued or stippled effects may beapplied 35 over the ground coating. The final wearing suri faces of anyof these treatments are then applied and are usually colorless bakedvarnish or clear pyroxylin lacquer. I employ barium fluo-silicate by'grinding it into the lacquer or varnish in a 40 proportion of 4 oz. tothe gallon and find that this does not affect the transparency, luster,gloss or wearing qualities while it does provide a germicidal treatment.

A colored finish maybe built up on the ground 45 coat by the use 'ofbaking enamels or pigmented' lacquers, in which case the'nishing coat islikewise treated by` grinding barium fluo-silicate therein in'aproportion of 4 oz. to the gallon.

Where soft materials such as building boards, 50 acoustical treatmentand the like are used either internally or externally, these are bestused in the form of composition boards such as the various pulp buildingboards although cork is equally suitable. 4 These are usually glued tosteel sheets 55 using a form of modified silica glue, although in casessome of the albumen glues are employed. I prefer to use the silica typeof glue in which is mixed barium silico fluoride in a proportion ofone-half pound to the gallon and to thoroughly coat the edges of thecomposition board with the glue in the instances Where steel sheets areglued to either side of the board. Where the steel sheet is glued toonly one side of the board, as in partitions having double insulatedpanels with an air space between, the unglued side of the compositionboard is treated with a light spray coat of barium silico fluoride mixedin any medium which will serve as a binder such as wall size or the sameglue as is commonly used on the opposite side.

In like manner, any loose materials such as mineral wool, balsam wooland the like may be treated with barium fluo-silicate using any type ofpaint, or such materials may be encased between paper in quilts orstockings and the paper treated with the barium nuo-silicate.

It will thus be seen that a system is provided which furnishes aprotective coating on all parts of the metal and which will not developany corrosive action. Correspondingly, a further treatment is built upon the exposed surfaces without in any way detracting from the wearingqualities or appearance of the surface.V Likewise, any interior fillersare treated in such a manner as to effectively hold the insecticide andgermicide permanently in position.

Other modes of applying the principle of the invention may be employed,change being made as regards the details described, provided the meansstated in any of the following claims, or the equivalent of such, beemployed.

I therefore particularly point out and distinctly claim as myinventionz- 1. A sanitary coated building structure, comprisingabuilding structure element including steel surfaces having a hardenedorganic paintlike coating applied to the steel surfaces, and anon-corroding fluoride embodied in such coating.

2. A sanitary coated'building structure, comprising a building structureelement including steel surfaces and fibrous materials and having ahardened organic paint-like coating with an admixed non-corrodingfluoride on the metal surfaces and a non-corroding fluoride held incontact with the surfaces of the fibrous materials by a mixture in abinder.

3. A sanitary coated building structure, comprising a building structureelement including steel surfaces having a hardened Organic paintlikecoating applied to' the steel and barium fluosilicate embodied in suchcoating.

4. A sanitary coated building structure, comprising a building structureelement including steel surfaces and brous materials and having ahardened organic paint-like coating with admixed barium fluo-silicate onthe metal surfaces and barium nuo-silicate held in contact with thesurfaces of the fibrous materials by a mixture in a binder.

5. A sanitary coated building structure, comprising a building structureelement having a hardened lithopone-base organic coating applied to thebare steel and a non-corroding fluoride embodied in such coating.

6. A sanitary coated building structure, comprising a building structureelement including steel surfaces and fibrous materials and having ahardened lithopone-base organic coating with admixed non-corrodingfiuoride on the metal surfaces, and an inert fiuoride held in contactwith the surfaces of the fibrous materials by a. mixture in a binder.

7. A sanitary coated building structure, comprising a building structureelement including steel surfaces having a hardened lithopone-baseorganic coating applied to the steel, and barium fluo-silicate embodiedin such coating.

8. A sanitary coated building structure, comprising a building structureelement including steel surfaces and fibrous materials and having ahardened lithopone-base organic coating with admixed barium fluo-sicateon the metal surfaces, and barium fluo-silicate held in contact with thesurfaces of the fibrous materials by a mixture in a binder.

THOMAS V. BALCH.

